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Donnacona to Beauport

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 21 January 2026

Today Tonight and Thursday.

Wind southwest 15 to 25 knots diminishing to southwest 10 to 15 early this morning then becoming light early this evening. Wind increasing to northeast 10 to 15 overnight and to southwest 20 to 30 near noon Thursday. Wind diminishing to southwest 15 Thursday evening.

Flurries this afternoon tonight and Thursday. Visibility as low as 1 mile in flurries.

Temperatures minus 13 rising to minus 2 Thursday afternoon then falling to minus 8 Thursday evening.

Extended Forecast

Issued 06:00 AM EST 21 January 2026
Friday Wind southwest 15 knots diminishing to light in the morning.
Saturday Wind light.
Sunday Wind light becoming northeast 15 knots late in the day.

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Map of St. Lawrence - St. Lawrence River marine weather areas Cap-Chat Mont-Joli Airport Bathurst Airport Île Bicquette Charlo Port Menier Miramichi Pointe-au-Père Fundy Park (Alma) New Carlisle Grand Manan Bas Caraquet CFB Bagotville Jonquière Mistook Normandin Roberval Airport Deschambault Beauport North Bay Airport Trois-Rivières Airport Lake Nipissing - 45152 Kouchibouguac Baie-Comeau Airport Île d'Orléans Saint-Anicet Sainte-Anne-de-Bellevue Cap-Rouge Lac Memphrémagog Montréal Metropolitain Airport Montréal-Trudeau Int'l Airport Île Rouge Lac Saint-Pierre L'Isle-aux-Grues L'Assomption Pointe de l'Islet Pointe Claveau Sept-Îles Airport Pointe-des-Monts North Cape Pointe-Noire Yarmouth Airport Cap-d'Espoir Brier Island Rivière-la-Madeleine St. Stephen Gaspé Airport Saint John Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Miscou Island Kouchibouguac La Pocatière
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land station Land Station
Ice Conditions

There is no ice forecast issued for this area.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 21 January 2026 Today Tonight and Thursday At 3:00 a.m. EST today trough located on a line northeast-southwest
over Natashquan.
By 3:00 p.m. EST today departing trough located over Labrador Sea.

At 3:00 a.m. EST today ridge located on a line north-south over
Rivière-du-Loup.
By 7:00 a.m. EST Thursday departing ridge located on a line
northwest-southeast over Natashquan.

At 3:00 p.m. EST today building trough located on a line north-south
over Lake Superior.
By 7:00 p.m. EST Thursday trough located on a line
northwest-southeast over Rimouski.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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